US 11,939,906 B2
Fuel bypass system for gaseous-fueled engine
Steven W. Craig, Big Bend, WI (US); Andrew P. Sibrel, Oconomowoc, WI (US); Aaron J. Baska, Greenfield, WI (US); and Douglas R. Clement, Wind Lake, WI (US)
Assigned to Generac Power Systems, Inc., Waukesha, WI (US)
Filed by Generac Power Systems, Inc., Waukesha, WI (US)
Filed on Nov. 3, 2022, as Appl. No. 18/052,517.
Application 18/052,517 is a continuation of application No. 17/108,514, filed on Dec. 1, 2020, granted, now 11,519,325.
Application 17/108,514 is a continuation of application No. 16/373,791, filed on Apr. 3, 2019, granted, now 10,883,415, issued on Jan. 5, 2021.
Claims priority of provisional application 62/652,186, filed on Apr. 3, 2018.
Prior Publication US 2023/0203982 A1, Jun. 29, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. F02B 29/04 (2006.01); F02B 3/04 (2006.01); F02D 19/02 (2006.01); F02D 29/06 (2006.01); F02D 41/00 (2006.01); F02D 41/06 (2006.01); F02M 21/02 (2006.01); F02M 35/10 (2006.01)
CPC F02B 29/0431 (2013.01) [F02B 3/04 (2013.01); F02B 29/0418 (2013.01); F02B 29/0475 (2013.01); F02D 29/06 (2013.01); F02D 41/0007 (2013.01); F02D 41/061 (2013.01); F02D 19/02 (2013.01); F02D 19/023 (2013.01); F02D 41/0027 (2013.01); F02D 41/062 (2013.01); F02M 21/02 (2013.01); F02M 35/10163 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A method of operating a forced induction gaseous-fueled engine, the engine comprising a bypass line, a charge air cooler, a throttle valve, an intake manifold, and a plurality of cylinders, the method comprising:
at least partially closing the throttle valve during a bypass period to deliver fuel during engine start through the bypass line to the intake manifold for delivery to the plurality of cylinders while bypassing the charge air cooler and the throttle valve, wherein the bypass line is upstream from an inlet of the charge air cooler and downstream from the throttle valves.